TM-9-2320-272-24-1

TRUCK, 5-TON, 6X6, M939, M939A1, AND M939A2 SERIES TRUCKS (DIESEL)

TECHNICAL MANUAL; UNIT, DIRECT SUPPORT, AND GENERAL SUPPORT MAINTENANCE MANUAL; VOLUME 1 OF 4

JUNE 1998

TM-9-2320-272-24-1 - Page 546 of 1015

3-61. SURGE

TM 9-2320-272-24-1

1.

Install surge tank (3) on cylinder head (14) with two exhaust manifold clamps (21), four washers (20),

new keywashers (19), and screws (18). Ensure clamps (21) are parallel to surface of cylinder

head (14). Tighten screws (18) 15-20 lb-ft (20-27 N•m).

2.

Retighten screws (18) 40-45 lb-ft (54-61 N-m) and bend tabs of keywashers (19) against flats of

screws (18).

3.

Connect engine oil cooler hose (15) to surge tank (3) and tighten clamp (16).

4.

Install surge tank support (13) on lifting eye (11) with screw (9) and new locknut (12).

5.

Install surge tank support extension (17) on support (13) with washer (10) and screw (7).

6.

Connect chain (6) to cap (4) and surge tank support (13) with pin (8).

7.

Install cap (4) on surge tank (3) with retaining pin (5).

NOTE

• Fittings must be cleaned and inspected for cracks and crossed

or stripped threads.

• Male pipe threads must be wrapped with antiseize tape before

installation.

1.

Install manifold return hose (22) and radiator vent hose (27) on surge tank (3).

2.

Install elbow (23) on water manifold (1).

3.

Install elbows (30) and (31) and adapter (32) on radiator (2).

4.

Connect manifold return hose (22) to elbow (23) on water manifold (1).

5.

Connect radiator vent hose (27) to adapter (32) on radiator (2).

6.

Install spacer (29) and hose clamp (24) on engine bracket (28) with washer (26) and screw (25).

Tighten screw (25) 75-95 lb-in (8-10 N•m).

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